This alternator is compatible with various GM vehicles from 2002 to 2005, including the Trailblazer, Envoy, Bravada, and Saab 9-7x with a 4.2L engine. It is designed to provide reliable and efficient performance, ensuring your vehicle's electrical systems function properly. This item has been carefully tested and is ready for installation. It comes from a trusted brand and is classified as an alternator, suitable for use in cars and trucks. Buy with confidence from eBay Motors, your source for quality parts and accessories.